On Mar 19, 2008, at 11:08 AM, Nikos Alexandris wrote:
John,
maybe you could try
v.clean with type=line,boundary,centroid,area tool=snap,break,rmdupl
thresh=.01
Not sure but I suspect the "break" tool is what you might need.
And then of course the rest with v.centroids
Nikos,
Thanks for the suggestion. I seem to be getting closer. I ran v.clean
as you suggested, then ran v.clean with tool=chdangle and a really big
threshold value. Now many more areas are available, but there are
still quite a few apparently closed polygons that are not being picked
up as areas. I'm playing around with different thresholds for snap and
various permutations of the various operations.
Thanks,
John
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